This part is a kind of semiconductor called TCA0606D.

Function of this product has TRANSFER EQUIPMENT.

Manufacturers : Reliance

Image and pinout :

Some of the text within the PDF file :

www.net TRANSFER EQUIPMENT TCA SERIES Manual Transfer Panels The Panel/Link TCA offers circuit breaker combinations of 60A-125A utility and 30A-125A generator. Interlinked circuit breakers keep the generator isolated from the utility at all times. The TCA is suitable for service entrance and Max. Utility Input Amp TCA0603D TCA0603DR 60 TCA0606D TCA0606DR TCA1003D TCA1003DR TCA1006D TCA1006DR TCA1010D TCA1010DR TCA1203D TCA1203DR TCA1206D TCA1206DR TCA1210D TCA1210DR TCA1212D TCA1212DR 60 100 100 100 125 125 125 125 CATALOG NUMBER Indoor Outdoor Surface (NEMA3R) Indoor Wgt: 10 LBS Dimensions : 13.25"h x 11.375"w x 3.938"d may be used as a main panel for a single load or to feed a sub-panel. Available in indoor and outdoor enclosures, the TCA has no provision for branch cir [ ... ]

TCA0606D PDF Datasheet Download